MT88E46 Ver la hoja de datos (PDF) - Zarlink Semiconductor Inc
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MT88E46 Datasheet PDF : 23 Pages
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MT88E46
Data Sheet
AC Electrical Characteristics† - FSK Demodulation
Characteristics
Sym. Min. Typ.‡ Max. Units
Notes*
1 Accept Signal Level
-40
-37.78 -
10.0
-6.45 dBV
-4.23 dBm 1, 2
476 mVrms
2 Bell 202 Format Reject Signal Level
-50.46 dBV
-
- -48.24 dBm 1, 2, 3
3 mVrms
3 Transmission Rate
Mark and Space Frequencies
Bell 202 1 (Mark)
4 Bell 202 0 (Space)
CCITT V.23 1 (Mark)
CCITT V.23 0 (Space)
5 Twist: 20 log (VMARK/VSPACE)
6 Signal to Noise Ratio
7 Input FSK to CD low delay
8 Input FSK to CD high delay
9 CD Time Hysteresis
1188 1200 1212 baud
1188 1200 1212
2178 2200 2222
SNRFSK
tCP
tCA
1280.5
2068.5
-6
20
-
10
10
1300
2100
-
-
-
-
-
1319.5
2131.5
+10
-
25
-
-
Hz
Hz
Hz
Hz
dB 2
dB 2, 3, 4
ms See Figures 16, 17
ms See Figures 16, 17
ms
†AC Electrical Characteristics are over recommended operating conditions, unless otherwise stated.
‡Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.
*Notes:
1. Tip/Ring input signal level.
dBm = decibels above or below a reference power of 1 mW into 600 ohms. 0 dBm = 0.7746Vrms.
dBV = decibels above or below a reference voltage of 1 Vrms. 0dBV = 1 Vrms.
2. GS1 op-amp configured to 0 dB gain for Vdd=5V±10%, -4 dB (preliminary) for Vdd=3V±10%.
3. Both mark and space have the same amplitude.
4. Band limited random noise (300-3400 Hz). Present when FSK signal is present.
Electrical Characteristics† - Gain Setting Amplifiers
Characteristics
Sym. Min. Max. Units
Test Conditions
1 Input Leakage Current
2 Input Resistance
3 Input Offset Voltage
4 Power Supply Rejection Ratio
IIN
-
1
µA Vss ≤ VIN ≤ Vdd
RIN
10
-
MΩ
VOS
-
25
mV
PSRR 30
-
dB 1kHz ripple on Vdd
5 Common Mode Rejection Ratio
CMRR 40
-
dB
6 DC Open Loop Voltage Gain
AVOL
40
-
dB
7 Unity Gain Bandwidth
fC
0.3
-
MHz
8 Output Voltage Swing
VO
0.5 Vdd-0.7 V
9 Capacitive Load (GS1,GS2)
CL
-
50
pF
10 Resistive Load (GS1,GS2)
RL
100
-
kΩ
11 Common Mode Range Voltage
VCM
1.0 Vdd-1.0 V
†Electrical characteristics are over recommended operating conditions, unless otherwise stated.
VCMmin ≤ VIN ≤ VCMmax
Load ≥ 100kΩ
16
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